Just switched over to a newer truck for work (Dodge Ram instead of the Chevy S-10)...
Two times now...
Get the new 2"-receiver put on the previously un-2"-receivered vehicle.
Insert NEW 2" hitch with ball of various size...
Forget, for a few micro-seconds, about the fresh install...
Walk FULL-FORCE into the immobile object (complete with UNCONTOURED, POWDER-COATED, UNBELIEVABLY SHARP EDGES) THAT'S LOCATED APPROXIMATELY AT THE MOST SENSITIVE PART OF THE SHIN...JUST BELOW THE KNEE-CAP...and as you're reacting to the sudden rush of pain heading past your groin and screaming for your ear-lobes and skull...you go crashing down into the gravel with the feeling of fresh, streaming blood gushing only where gravity pulls it...
Yep...both times...and it don't heal any faster as you get older...